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Car and businesses burn as riot police face over 1000 "Black Bloc" activists called out onto the streets via social media.
Thousands of Greek workers marched through the centre of Athens on Tuesday - one of a series of protests marking May Day.
Clashing sticks, waving handkerchiefs and jangling bells are all part of a cherished British tradition celebrated on May 1st
Thousands of people marched to the Philippines' presidential palace in Manila on Tuesday to mark Labour Day.